Side-slip weft detector for looms



Dec. 18,1928.

V. H. JENNINGS SIDE SLIP WEFT DETECTOR FOR LOOIIS Original Filed May 13, 1926' 2 Sheets-Sheet 1 Vic 7-0 H (Zs'w/vm/as ATTmP/v s Patented Dec. 18, 1928.

UNITED STATES PATENT OFFlC E.

VICTOR H. JENNINGS, or WORCESTER, MASSACHUSETTS, ASSIGNOR To CROMPTON & KNOWLES LOOM WORKS, or wonons'rnn, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

SIDE-SLIP DETECTOR FOR IJOOMS.

Original application filed May 13, 1926, Serial No. 108,942 Divided and. this application filed August 1, 1927. Serial No, 209,705.

This application is the division of my prior application Ser. No. 108,942 filed May 13, 1926.

This invention relates to improvements in weft detectors for looms and it is the gen; eral object of the invention to provide improved means for indicating weft exhaustion by a side slip type, more particularly on a multi-color box loom.

It is a further object of my invention to employ a side slip movement of the detector in conjunction with light devices including a cam or incline surface which will act to indicate weft exhaustion wien the detector slides along an empty bobbin.

\Vith these and other objects in view which will appear as the description proeeeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawings wherein I have shown a convenient embodiment of my invention,

Fig. 1 is a top plan view of a weft detector embodying my invention, the foot of the weft replenishing mechanism being shown in section and the bobbin and shuttle being indicated in dotted lines,

Fig. 2 is a vertical section online 22 of Fig. 1 looking-in the direction of the arrows,

Fig. 3 is a front elevation of the detector on a reduced scale looking in the direction of arrow 3, F 1,

Fig. 4 is a detail view ,of the detector with the cap removed showing the detector in Withdrawn position,

Fig. 5 is an'en'larged fragmentary taken on line 55 of Fig. 1 direction of the arrows, and

Fig; 6 is a vertical section on line 66 of Fig.

Referring particularly to Figs. 1, 2, and 3 it willbe seen that I have provided a loomside 10 and breast beam 11'on whichis sect-ion looking in the mounted the frame 12 of a weft replenishhas depending legs 17 between which extends a stud 18 by means of which the transferrer is given a downward movement on the transferring pick of the loom by connections not shown. I

A stand 19 is bolted to the loom frame and has vertically reciprocably mounted therein a block 20 on which is pivoted an actuator lever 21 the inner end of which is connected to a magazine actuating rod 22 and the other end. of which lies in slot 23 formed in the stand. then there is sufiicient weft present for continued weaving the actuator lever 21 will. be free to descend in slot 23, but when insufticient weft is present a controller pin 24 will be under the outer end of the actuator lever 21 and as the block 20 descends rod 22 will be given a downward movement to initiate replenishment. The matter thus far described is ofcominon construction and may be as set forth in the aforesaid patent,

the only difi'erence' being that controller pin 24 is somewhat different from that shown in the atoresaid patent.

In carrying out my invention provide a bracket 30 to whichis bolted a stand 31 having a horizontalslot 32 to receive a bolt 33 which passes througha vertical slot 34 formed in support 35. The upper part of the support is flattened as at 36 to fornr the lower portion of a detector housing the upper part of which is provided by a cap 37.

The support is provided with a boss 38' and is surrounded for the most part an upstanding flange 39'. Said flange is broken away at the rear right portion to define a shoulder 41 and there is projecting inwardly from thele'lt-hand side oft-he flange a lug 42 w 1101-1 defines a notch 43.

The, detector which I employ, is for-med of a single piece of wire Dbent at the rear portion thereof and, having teeth 44 cut therein, the forwardly extending portion of the wire being curved as indicated in Fig. 1 and normally lying in contact with shoulder 41. Said wire is provided with a bent portion 45 and a straight portion extending to ill) than the distance between the inside side walls of the flange 39, the purpose of this construction being to prevent undue lateral movement of the detector. The forward portion of the wire is provided with a crimp d8 which receives the foward end of a coil spring 49, the rear end of which is received by a projection cast on the support. The normal function of the spring 49 is to hold the pivot portion 4i? in the notch 43 and the curved rearwardly extendin part of the detector against shoulder 41 thus positioning said detector for proper engagement with the surface to be detected.

Myinvention relates more particularly to the method of moving the controller pin 21 by means of lateral movement of the de tector D. In carrying out this part of my invention I provide the right hand flange of the support with a slot 51 through which projects the lower end 52 of a transmitter wire T, the said wire extending to the left as indicated in Fig. 1 and being formed with an inclined portion 53 which cooperates with a fixed guide 5st. Said guide is formed preferably of a wire and has a loop 55 through which extends a retaining screw 56 and also a rearwardly extending diagonally disposed finger 57 which straddles the inclined portion 53 of the transmitter wire T and is so placed as to cooperate with the latter when the transmitter is moved. As shown in Fig. 2 the controller pin 2st is formed as the lower leg of a U-shaped member G slidable in stand 19, a spring 58 sur rounding the controller 24 and pushing against the stand to hold the member C in the position indicated in Fig. 2. The upper leg of the member C is extended across slot 23 as at 61 to cooperate with the actuator lever 21 on non-indicating picks of the loom, as set forth in the aforesaid patent. A cotter pin 62 limits movement of the member C under action of the spring 58.

In order to provide for withdrawing the detector I provide a light wire W hooked as at 59 to extend behind the detector D at a point between the pivot end 47 and the crimp l8 and said wire has the forward portion thereof looped as at to pass around an extension of the stud 18 as shown in Figs. 1, 2, and 3. The wire l V extends through a notch 63 formed in the forward flange 39 and the hook 59 extends downwardly and is guided by a rib 6-]: formed in the support 35. Upward displacement of the wire W is prevented by cap 37.

Under normal conditions the parts will be as indicated in full lines in Fig. 1 and as the lay moves forwardly the teeth 14: of the detectorD will engage the bobbin. If the latter is provided with sufficient yarn the teeth is will be embedded in the yarn and lateral movement of the detector D will be prevented, the detector moving forwardly as a whole away from boss 38 without angular movement and against the action of light tension spring 49. The curved portion of the detector will under these conditions move past the short lower end 52 of the transmitter without moving the same. WVhen insufiicient yarn is present however, the teeth delwill not be embedded sufliciently to prevent angula-r movement of the detector and the latter will move about notch 43 as a pivot, assuming the dotted line position indicated in 1. When this takes place the detector will move the transmitter to the right causing the inclined portion 58 to move along the finger 57. As the latter is fixed the inclined part will cause the transmitter to move forwardly against the upright part of member C against the action of'spring 50 to move controller pin 2a under the actuator lever 21. At this time the block 20 descenus, as previously described, but the right hand end of the actuator will be held up by the controller to cause a depression of connector 22 with resultant initiation of a weft change.

At a subsequent pick of the loom when the indicating shuttle again arrives on the detector side of the loom the transferrer arm 16 will descend as previously indicated to place a new bobbin in the empty shuttle and this movement will be accompanied by a forward movement of the leg 17 the latter moving from the fall to the dotted line position indicated in Fig. 2. This is accompanied by a forward movement of the withdrawing wire W, the latter pulling the detector D to the position indicated in Fig. 4: against the action of spring 19. During this forward movement the curved portion of the detector engages the shoulder ll and the bent portion 15 slides along the adjacent flange 39 and angular movement of the detector is prevented by reason of the fact that the spring applies its force at a point between the withdrawing wire and the shoulder 41. For this reason the detectorwill be withdrawn from the path of the incoming bobbin and the transmitter will remain at rest without being actuated and therefore without giving a second indication to the connector 22.

From the foregoing it will be seen that the guide 54: can be adjusted by means of slot 55 and screw 56 to vary the position of the controller pin with respect to the actuator lever. It will also be seen that the controller pin is provided with a vertical position which cooperates with the left hand end of the transmitter T as viewed in Fig. 1 and that for all positions of the controller pin 2 stop pin 61 will be in operative relation with respect to the actuator lever 21.

Having thusydescribed my invention it will be apparent that changes and modifications may be made therein by those skilled llHi in the art without departing from the spirit and scope of the invention, and I do not wish to be limited to the details herein disclosed but what I claim is:

1. In a side slip weft detector to effect a change in the operation of a loom, a support, a weft detector mounted on the support, said detector moving forwardly as a whole relatively to the support on non-indicating detecting beats of the loom and said detector having an angular movement about a part of the support as a center on indicating detecting beats of the loom, a laterally movable member to be engaged and moved by the detector when the latter moves angularly, an actuator, a controller therefor operatively disposed with respect to the member, said member having an inclined portion, and means fixed relatively to the support and engaging the inclined portion to cause the controller to be operatively related to the actuator when the member is moved laterally by an angular movement of the detector,

2. In a weft detector for looms, aframe, a weft detector to indicate weft exhaustion, an actuator movable in two directions, and a U-shaped element to cooperate with the actuator, one arm of said element serving as e, a controller to be moved in the path of the an actuator movable in two directions, a

detector, an element under control of the detector and controlling the actuator, said element having a portion to be moved into the path of the actuator by the detector when the latter indicates weft exhaustion and said element having also another portion moving with the first portion and at all times lying in the path of the actuator independent of the position of the first named position of the element, and resilient means acting on the element to move the first named portion thereof out of the path of the actuator, both arms being guided by the frame to hold the controller in position.

45. In a Weft detector for looms, a weft detector to indicate weft exhaustion, an actuator movable in two directions, a U- shaped element to cooperate with the actuator, one arm of said element serving as a controller to be moved in the path of the actuator by the detector when the latter indi cates weft exhaustion at the time the actuator moves in one direction and the other arm lying in the path of the actuator when the latter moves in the other direction, said other arm being in the path of the actuator for all positions of the controller, and a spring surrounding one of the arms of the U-shaped member and tending normally to move the controlling part of the element out of the path of the actuator.

5. In a side slip weft detector to effect a change in the operation of a loom, a support, a weft detector mounted on the support, said detector moving forwardly as a whole relatively to the support on non-indicatingdetecting beats of the loom and said detector having an angular movement about a part of the support as a center on indicating detecting beats of the loom, a laterally movable member to be engaged and moved by the detector when the latter moves angularly,

a second member fixed relatively to the sup port to cooperate with the first named mem-.

her, an actuator, a controller for the actuator operatively disposed with respect to the first named member, one of said members having an inclined portion to engage a part of the other member to cause the controller to be operatively related to the actuator when the first named member is moved laterally by an angular movement of the detector.

In testimony whereof I have hereunto aflixed my signature.

VICTOR H. JENNINGS. 

